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AR# 64247

UltraScale - Bidirectional LVDS termination schemes

Description

Solution

The SelectIO User Guide (UG571) states that bidirectional buffers are supported for LVDS and LVDS_25 and notes the following:

"The bidirectional configuration on these I/O standards is a fixed impedance structure optimized to 100 differential. They are intended to only be used in point-to-point transmissions that do not have turn around timing requirements. Use BLVDS_25 for bus structures."